Let me throw a wild-card into this discussion of evangelism. I’m not really going anywhere specific with this; it was just banging around in my head today (along with lots of thoughts about Tiger Woods and the PGA Championship this week).
In my college and seminary courses on the church, the question of the purpose of the church in the world was always answered with one text–Matthew 28:19-20. Jesus’ words about making disciples were transformed into a mandate for faithful evangelism on the part of the church. But that’s not what Jesus says to do. The church is to make disciples, baptizing and teaching them how to obey Jesus.
Setting aside this text, here’s my question: If you wanted to make a biblical argument that a key task of the church is to evangelize non-Christians, what clear text would you cite for support? What passage explicitly commands the church to evangelize?